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Message-ID: <CACT4Y+bSBgbSntkdEXFD+_aJZOrtMfm_WB0K7-psYVSVCg8vTg@mail.gmail.com>
Date:   Thu, 23 Aug 2018 07:13:13 -0700
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     syzbot <syzbot+5702a7e6d4a13b3accd5@...kaller.appspotmail.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Al Viro <viro@...iv.linux.org.uk>
Subject: Re: KASAN: slab-out-of-bounds Write in process_preds

On Thu, May 10, 2018 at 7:23 AM, Steven Rostedt <rostedt@...dmis.org> wrote:
> On Thu, 10 May 2018 07:14:26 +0200
> Dmitry Vyukov <dvyukov@...gle.com> wrote:
>
>> > IMPORTANT: if you fix the bug, please add the following tag to the commit:
>> > Reported-by: syzbot+5702a7e6d4a13b3accd5@...kaller.appspotmail.com
>> > It will help syzbot understand when the bug is fixed. See footer for
>> > details.
>> > If you forward the report, please keep this part and the footer.
>>
>>
>> This was bisected to:
>>
>> commit 80765597bc587feae8dbc8ce97a0f32e12a6e625
>> Author: Steven Rostedt (VMware) <rostedt@...dmis.org>
>> Date:   Fri Mar 9 13:19:28 2018 -0500
>>
>>     tracing: Rewrite filter logic to be simpler and faster
>
> I could have told you that without the bisect ;-)
>
> I'll try to get some time to look into this.


It seems this was lost on kernel mailing lists, then re-reported after 2 months:
https://bugzilla.kernel.org/show_bug.cgi?id=200019
and then fixed.

Since the fixing commit does not contain syzbot tag, need to tell it
about the fix manually:

#syz fix: tracing: Check for no filter when processing event filters

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